/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import javax.servlet.http.HttpSession;
import model.pojo.*;
import model.dao.*;

/**
 *
 * @author VuTienIT
 */
@WebServlet(name = "home", urlPatterns = {"/home"})
public class home extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        HttpSession session = request.getSession();
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        request.removeAttribute("Error");
        String page = request.getParameter("Page");
        String action = request.getParameter("Action");
        String m = request.getParameter("m");
        String maDanhMuc = request.getParameter("MaDanhMuc");
        int trang = 1;
        if(request.getParameter("Trang")!=null)
        {
            trang = Integer.parseInt(request.getParameter("Trang"));
        }
        
        // Tạo Session đăng nhập cho khách hàng
        KhachHangPOJO ssDangNhap = null;
        if(session.getAttribute("KhachHang")==null)
        {
            ssDangNhap = new KhachHangPOJO();
            session.setAttribute("KhachHang", ssDangNhap);
        }
        else
        {
            ssDangNhap = (KhachHangPOJO)session.getAttribute("KhachHang");
        }
        
        if(page!=null)
        {
            ArrayList<DanhMucPOJO> danhMucs = DanhMucDAO.getDanhSach();
            request.setAttribute("DanhMucS", danhMucs);
            ArrayList<PhieuPOJO> dsKMt = PhieuDAO.getDanhSachKMHnay3();
            request.setAttribute("PhieuKM", dsKMt);
            if(page.equals("View")) 
            {
                if(m!=null && m.equals("KMT"))
                {
                    ArrayList<PhieuPOJO> dsKM = PhieuDAO.getDanhSachKMHnay3();
                    request.setAttribute("PhieuKM", dsKM);
                    ArrayList<PhieuPOJO> ds = PhieuDAO.getDanhSachKMTruocPT(trang);
                    int soTrang = PhieuDAO.tinhsoluongTrangKMTruoc();
                    request.setAttribute("soTrang", soTrang);
                    request.setAttribute("PhieuS", ds);                   
                    request.setAttribute("lienket", "home?Page=View&m=KMT");
                    request.getRequestDispatcher("/Home.jsp").forward(request, response);
                }
                if(maDanhMuc==null && m==null)
                {
                    ArrayList<PhieuPOJO> dsKM = PhieuDAO.getDanhSachKMTruoc3();
                    request.setAttribute("PhieuKM", dsKM);
                    ArrayList<PhieuPOJO> ds = PhieuDAO.getDanhSachPT(trang);
                    int soTrang = PhieuDAO.tinhsoluongTrang();
                    request.setAttribute("soTrang", soTrang);
                    request.setAttribute("PhieuS", ds);
                    request.setAttribute("lienket", "home?Page=View");
                    request.getRequestDispatcher("/Home.jsp").forward(request, response);
                }
                else if(maDanhMuc!=null)
                {
                    int maDM = Integer.parseInt(maDanhMuc);
                    ArrayList<PhieuPOJO> dsKM = PhieuDAO.getDanhSachKMLoaiTruDM3(maDM);
                    request.setAttribute("PhieuKM", dsKM);
                    int soTrang = PhieuDAO.tinhSoLuongTrangLoai(maDM);
                    request.setAttribute("soTrang", soTrang);
                    ArrayList<PhieuPOJO> ds = PhieuDAO.getDanhSachLoaiPT(maDM,trang);
                    request.setAttribute("PhieuS", ds);
                    request.setAttribute("lienket", "home?Page=View&MaDanhMuc="+maDM);
                    request.getRequestDispatcher("/Home.jsp").forward(request, response);
                }
            }
            //Tìm kiếm
            if(page.equals("Search"))
            {
                String tukhoa = request.getParameter("tukhoa");
                ArrayList<PhieuPOJO> ds = PhieuDAO.getDanhSachTimKiemPT(tukhoa,trang);
                int soTrang = PhieuDAO.tinhSoLuongTrangTK(tukhoa);
                request.setAttribute("soTrang", soTrang);
                request.setAttribute("PhieuS", ds);
                request.setAttribute("lienket", "home?Page=Search&tukhoa="+tukhoa);
                request.getRequestDispatcher("/Home.jsp").forward(request, response);
            }

        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
